[CentOS] Resize a VM: any risk involved ?

Thu Apr 8 15:59:31 UTC 2021
Leon Fauster <leonfauster at googlemail.com>

On 08.04.21 17:43, Nicolas Kovacs wrote:
> Hi,
> I'm currently fiddling with KVM, Proxmox and various VMs.
> I setup a very basic VM with a manual (fdisk) partitioning scheme: one /boot
> partition, one swap partition, and one root partition, the latter being the
> last partition and thus expandable).
> I'm starting with a reduced disk size (6 GB in total) and a minimal
> installation. The idea behind this approach is that I can clone this minimal VM
> and then eventually expand it to fit my needs.
> Here's how I expand the available disk size.
> First I increase the virtual disk in the hypervisor.
> Then I fire up the VM and do the following:
> # yum install cloud-utils-growpart
> # lsblk
> # growpart -v /dev/sda 3
> # resize2fs /dev/sda3
> Now here's my question (finally): is there any risk involved in this sort of
> operation? Or can it be performed on a production system without having to
> worry about data loss?

Just a hint - man virt-resize